[c-nsp] MPLS Header

[sthaug at nethelp.no]

> if i have POS interface (STM-1 link) and i enabled MPLS on it 
> how much header i will lose from the overall capacity (155.52 M)
> and how the interface type will affect on the size ?

MPLS labels are 4 bytes each. You typically need 2 labels, thus 8
bytes. There are situations where you might need 3 labels, seldom
more.

What percentage this is of the total capacity depends on packet size.
If you have to worry about it, it may mean you're doing something wrong.

Steinar Haug, Nethelp consulting, sthaug at nethelp.no